Interaction of Rydberg excitons in cuprous oxide with phonons and photons: optical linewidth and polariton effect

被引：42

作者：

Stolz, Heinrich ^{[1
]}

Schoene, Florian ^{[1
]}

Semkat, Dirk ^{[1
]}

机构：

[1] Univ Rostock, Inst Phys, D-18051 Rostock, Germany

来源：

NEW JOURNAL OF PHYSICS | 2018年 / 20卷

关键词：

Rydberg excitons; phonon scattering; polaritons; cuprous oxide; QUANTUM-THEORY; CU2O; ABSORPTION; RESONANCE;

D O I：

10.1088/1367-2630/aaa396

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that the optical linewidth of Rydberg excitons in Cu2O can be completely explained by scattering with acoustical and optical phonons, whereby the dominant contributions stems from the non-polar optical Gamma(-)(3) G-and Gamma(-)(5) G-modes. The consequences for the observation of polariton effects are discussed. We find that an anti-crossing of photon and exciton dispersions exists only for states with main quantum numbers n > 28, so polariton effects do not play any role in the experiments reported up to now.

引用

页数：15

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